Erect dense shrub to 1.2 m tall, single-stemmed reseeder. Branches: many erect main branches continuing growth and numerous flowering side branches 3-15 mm long, pubescent when young, later with long plumose hairs admixed, the hairs erect to spreading, no infrafoliar ridges. Leaves 3-nate, erect-imbricate to spreading, 3.0-4.0 x 0.5 mm, oblong to lanceolate, apex acute, adaxially flattened, abaxially acute and narrowly sulcate, acute-angular, glabrous, ciliate often with an apical tuft, margin becoming glabrous; petiole 0.5-0.8 mm long, adpressed, glabrous, ciliate. Inflorescence: flowers 3-nate in 1(2) whorls, terminal at ends of lateral branchlets aggregated into dense clusters towards ends of main branches; pedicel very short 0.1 mm long, glabrous, green to red; bract partially recaulescent, approximate and adpressed to calyx, 1.5 x 0.5 mm, narrowly ovate, apex acute, keeled and sulcate in upper half, rounded basally, glabrous, ciliate with apical tuft, white with greenish to reddish keeltip; bracteoles approximate, like bract but slightly smaller. Calyx 4-partite, segments 1.8 x 0.6-0.7 mm, ovate to narrowly elliptic-ovate, two outer basally imbricate, the inner slightly narrower, apex acute, keeled along the sulcus, sulcus narrow about 1/2 the length of segment, adpressed to corolla, arched inwards and boat-shaped, glabrous, ciliate, sometimes also with a few sessile glands, green. Corolla 4-lobed, 2.0 x 1.75 mm, urceolate to broadly ellipsoid-ovoid, with 8 distinct obtuse to subacute angles in lower half, glabrous, white, becoming thickened and hard with age and turning red-brown with slightly reticulate surface; lobes erect to spreading, basally imbricate, 0.7 x 1.0 mm, broadly rounded to subacute, erose. Stamens 4, free, manifest; filaments broadly linear, glabrous, with sigmoid bend below anther; anthers dorsally attached near base, oblong-elliptic, spurred; thecae erect, 1.3 x 0.3 mm, narrowly ovate, finely aculeate especially on edges, golden brown; spurs attached just above filament joint, ±0.2 mm long, linear, spreading to recurved, irregularly toothed; pore about 1/3 length of theca; pollen in tetrads. Ovary 2-locular, 0.75 x 0.5 mm, unequally ovoid laterally compressed, apex obtuse, glabrous; nectaries red and distinct around base; ovules [2]3(-5)[6] per locule, pendulous from a large placenta in upper half; style exserted, up to 1.5x as long as corolla, terete, glabrous, white; stigma slightly cyathiform becoming subpeltate with 2 distinct stigmatic processes, green to reddish. Fruit indehiscent, 2.0 x 1.7 mm, broadly ellipsoid, with style often shed and leaving round apical pore, protected by very hard corolla; pericarp thin, papery, very brittle, exocarp colliculate, thick-celled, mesocarp thin with numerous crystals, endocarp of very thin elongated cells, seeds ellipsoid, very slightly reticulate, light brown, testa thin crustaceous, cells elongate with undulate anticlinal walls, pitted.
More
Erect shrub to 1.2 m. Flowers small, urn-shaped, dull white.